Zhangfatai | 5 Sep 04:50 2011

Request comments on draft-zhang-ccamp-gmpls-uni-app

Hi Authors of RFC4208 and CCAMpers,

 

I am updating [draft-zhang-ccamp-gmpls-uni-app], do you have any comments on this draft?

 

Any comments or suggestions are appreciated.

 

 

 

Thanks
 
Fatai

 

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Daniele Ceccarelli | 6 Sep 16:31 2011
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OTN OSPF draft

Hi CCAMPers,
 
The new version of the OTN OSPF draft has been published and can be found at the following link:
 
 
 
Main changes address comments/feedback received at the IETF 81 meeting in Quebec City and consist on:
 
- Removing the SCSI TLV --> single SCSI per ISCD and consequent unbundling of component links with dissimilar hierarchies. In other words, what was supposed to be split into different SCSI TLV is now split into different ISCDs
- Removing the F flag for the distinction between unres bandwidth and max lsp bandwidht for flexible container and adding the Bandwdith TLV type 3 (type 2 is now for unres band and type 3 for max lsp band).
- Adding the TSG advertisement
- Adding an example of MAX LSP Bandwidth fields in the ISCD common part
- Adding some text expalining the T,S bits example
- Updating the examples accordingly with the modifications
- Zero padding to 32 bit alignment in case of odd supported priorities.
...Nits here and there.
Thanks
The authors
 
 



DANIELE CECCARELLI
System & Technology - DU IP & Broadband

Via L.Calda, 5
Genova, Italy
Phone +390106002512
Mobile +393346725750
daniele.ceccarelli <at> ericsson.com
www.ericsson.com

This Communication is Confidential. We only send and receive email on the basis of the term set out at www.ericsson.com/email_disclaimer
 
 
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internet-drafts | 9 Sep 00:15 2011
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I-D Action: draft-ietf-ccamp-wson-signal-compatibility-ospf-05.txt

A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item
of the Common Control and Measurement Plane Working Group of the IETF.

	Title           : OSPF Enhancement for Signal and Network Element Compatibility for Wavelength Switched Optical Networks
	Author(s)       : Young Lee
                          Greg M. Bernstein
	Filename        : draft-ietf-ccamp-wson-signal-compatibility-ospf-05.txt
	Pages           : 14
	Date            : 2011-09-08

   This document provides GMPLS OSPF routing enhancements to support
   signal compatibility constraints associated with WSON network
   elements. These routing enhancements are required in common optical
   or hybrid electro-optical networks where not all of the optical
   signals in the network are compatible with all network elements
   participating in the network.

   This compatibility constraint model is applicable to common optical
   or hybrid electro optical systems such as OEO switches, regenerators,
   and wavelength converters since such systems can be limited to
   processing only certain types of WSON signals.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-ccamp-wson-signal-compatibility-ospf-05.txt

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/

This Internet-Draft can be retrieved at:
ftp://ftp.ietf.org/internet-drafts/draft-ietf-ccamp-wson-signal-compatibility-ospf-05.txt
internet-drafts | 9 Sep 07:55 2011
Picon

I-D Action: draft-ietf-ccamp-gmpls-g709-framework-05.txt

A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item
of the Common Control and Measurement Plane Working Group of the IETF.

	Title           : Framework for GMPLS and PCE Control of G.709 Optical Transport Networks
	Author(s)       : Fatai Zhang
                          Dan Li
                          Han Li
                          Sergio Belotti
                          Daniele Ceccarelli
	Filename        : draft-ietf-ccamp-gmpls-g709-framework-05.txt
	Pages           : 28
	Date            : 2011-09-08

   This document provides a framework to allow the development of
   protocol extensions to support Generalized Multi-Protocol Label
   Switching (GMPLS) and Path Computation Element (PCE) control of
   Optical Transport Networks (OTN) as specified in ITU-T Recommendation
   G.709 as consented in October 2009.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-ccamp-gmpls-g709-framework-05.txt

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/

This Internet-Draft can be retrieved at:
ftp://ftp.ietf.org/internet-drafts/draft-ietf-ccamp-gmpls-g709-framework-05.txt
Zhangfatai | 9 Sep 08:23 2011

Re: I-D Action: draft-ietf-ccamp-gmpls-g709-framework-05.txt

Hi CCAMPers,

 

A new version of OTN framework document has been submitted because it will be expired soon.

 

The updates are based on the progress of OTN OSPF and RSVP-TE drafts, more specifically as follows:

 

(1) Refined some text related to a new switching type (101) introduced in the routing.

(2) Added a new signaling requirement to describe the new Switching Type in the signaling should be consistent with routing.

(3) Added a new routing requirement about TSG advertisement, and consequently, refined some text about TSG information in the signaling.

 

Please share your comments or concerns.

 

 

Thanks

 

Fatai

 

 

-----Original Message-----
From: ccamp-bounces <at> ietf.org [mailto:ccamp-bounces <at> ietf.org] On Behalf Of internet-drafts <at> ietf.org
Sent: 2011
99 13:56
To: i-d-announce <at> ietf.org
Cc: ccamp <at> ietf.org
Subject: [CCAMP] I-D Action: draft-ietf-ccamp-gmpls-g709-framework-05.txt

 

A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Common Control and Measurement Plane Working Group of the IETF.

 

         Title           : Framework for GMPLS and PCE Control of G.709 Optical Transport Networks

         Author(s)       : Fatai Zhang

                          Dan Li

                          Han Li

                          Sergio Belotti

                          Daniele Ceccarelli

         Filename        : draft-ietf-ccamp-gmpls-g709-framework-05.txt

         Pages           : 28

         Date            : 2011-09-08

 

   This document provides a framework to allow the development of

   protocol extensions to support Generalized Multi-Protocol Label

   Switching (GMPLS) and Path Computation Element (PCE) control of

   Optical Transport Networks (OTN) as specified in ITU-T Recommendation

   G.709 as consented in October 2009.

 

 

A URL for this Internet-Draft is:

http://www.ietf.org/internet-drafts/draft-ietf-ccamp-gmpls-g709-framework-05.txt

 

Internet-Drafts are also available by anonymous FTP at:

ftp://ftp.ietf.org/internet-drafts/

 

This Internet-Draft can be retrieved at:

ftp://ftp.ietf.org/internet-drafts/draft-ietf-ccamp-gmpls-g709-framework-05.txt

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Leeyoung | 9 Sep 21:51 2011

FW: I-D Action: draft-ietf-ccamp-wson-signal-compatibility-ospf-05.txt

Hi,

This update added a new section to discuss OSPF scalability and how to use multiple TE LSA instance
technique to keep the LSA under the MTU limit. Please note that the MTU limit is 1500 bytes and the examples
given in the encoding draft is far below this limit. In case the LSA size goes above the MTU, this draft
discusses how to split the Sub-TLVs' defined under the Optical Node Property TLV under the MTU limit to
avoid fragmentation. 

Take a look at Section 3 and if you have questions, please feel free to discuss in the mailing list. 

Regards,
Young

-----Original Message-----
From: ccamp-bounces <at> ietf.org [mailto:ccamp-bounces <at> ietf.org] On Behalf Of internet-drafts <at> ietf.org
Sent: Thursday, September 08, 2011 5:16 PM
To: i-d-announce <at> ietf.org
Cc: ccamp <at> ietf.org
Subject: [CCAMP] I-D Action: draft-ietf-ccamp-wson-signal-compatibility-ospf-05.txt

A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item
of the Common Control and Measurement Plane Working Group of the IETF.

	Title           : OSPF Enhancement for Signal and Network Element Compatibility for Wavelength Switched Optical Networks
	Author(s)       : Young Lee
                          Greg M. Bernstein
	Filename        : draft-ietf-ccamp-wson-signal-compatibility-ospf-05.txt
	Pages           : 14
	Date            : 2011-09-08

   This document provides GMPLS OSPF routing enhancements to support
   signal compatibility constraints associated with WSON network
   elements. These routing enhancements are required in common optical
   or hybrid electro-optical networks where not all of the optical
   signals in the network are compatible with all network elements
   participating in the network.

   This compatibility constraint model is applicable to common optical
   or hybrid electro optical systems such as OEO switches, regenerators,
   and wavelength converters since such systems can be limited to
   processing only certain types of WSON signals.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-ccamp-wson-signal-compatibility-ospf-05.txt

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/

This Internet-Draft can be retrieved at:
ftp://ftp.ietf.org/internet-drafts/draft-ietf-ccamp-wson-signal-compatibility-ospf-05.txt
_______________________________________________
CCAMP mailing list
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https://www.ietf.org/mailman/listinfo/ccamp
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internet-drafts | 9 Sep 23:19 2011
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I-D Action: draft-ietf-ccamp-rwa-info-12.txt

A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item
of the Common Control and Measurement Plane Working Group of the IETF.

	Title           : Routing and Wavelength Assignment Information Model for Wavelength Switched Optical Networks
	Author(s)       : Young Lee
                          Greg M. Bernstein
                          Dan Li
                          Wataru Imajuku
	Filename        : draft-ietf-ccamp-rwa-info-12.txt
	Pages           : 27
	Date            : 2011-09-09

   This document provides a model of information needed by the routing
   and wavelength assignment (RWA) process in wavelength switched
   optical networks (WSONs).  The purpose of the information described
   in this model is to facilitate constrained lightpath computation in
   WSONs. This model takes into account compatibility constraints
   between WSON signal attributes and network elements but does not
   include constraints due to optical impairments. Aspects of this
   information that may be of use to other technologies utilizing a
   GMPLS control plane are discussed.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-ccamp-rwa-info-12.txt

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/

This Internet-Draft can be retrieved at:
ftp://ftp.ietf.org/internet-drafts/draft-ietf-ccamp-rwa-info-12.txt
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Leeyoung | 9 Sep 23:29 2011

FW: I-D Action: draft-ietf-ccamp-rwa-info-12.txt

Hi,

This update (version 12) includes the following:

(i) Replaced all instances of "ingress" with "input" and all instances of "egress" with "output". 
(ii) Added clarifying text on relationship between resource block model and physical entities such as
line cards.

This draft is now very mature and incorporated all the comments raised in the mailing list and the last
meetings. 

Thanks,
Young

-----Original Message-----
From: ccamp-bounces <at> ietf.org [mailto:ccamp-bounces <at> ietf.org] On Behalf Of internet-drafts <at> ietf.org
Sent: Friday, September 09, 2011 4:20 PM
To: i-d-announce <at> ietf.org
Cc: ccamp <at> ietf.org
Subject: [CCAMP] I-D Action: draft-ietf-ccamp-rwa-info-12.txt

A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item
of the Common Control and Measurement Plane Working Group of the IETF.

	Title           : Routing and Wavelength Assignment Information Model for Wavelength Switched Optical Networks
	Author(s)       : Young Lee
                          Greg M. Bernstein
                          Dan Li
                          Wataru Imajuku
	Filename        : draft-ietf-ccamp-rwa-info-12.txt
	Pages           : 27
	Date            : 2011-09-09

   This document provides a model of information needed by the routing
   and wavelength assignment (RWA) process in wavelength switched
   optical networks (WSONs).  The purpose of the information described
   in this model is to facilitate constrained lightpath computation in
   WSONs. This model takes into account compatibility constraints
   between WSON signal attributes and network elements but does not
   include constraints due to optical impairments. Aspects of this
   information that may be of use to other technologies utilizing a
   GMPLS control plane are discussed.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-ccamp-rwa-info-12.txt

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/

This Internet-Draft can be retrieved at:
ftp://ftp.ietf.org/internet-drafts/draft-ietf-ccamp-rwa-info-12.txt
_______________________________________________
CCAMP mailing list
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https://www.ietf.org/mailman/listinfo/ccamp
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Acee Lindem | 13 Sep 00:58 2011
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Re: FW: I-D Action: draft-ietf-ccamp-wson-signal-compatibility-ospf-05.txt

Hi Young, Greg, 
I have the following comments:

   1. Specify that the Optical Node Property TLV cardinality and order rules per LSA. 
       For example (from RFC 3630): 

     "The Link TLV describes a single link.  It is constructed of a set of
       sub-TLVs.  There are no ordering requirements for the sub-TLVs.

      Only one Link TLV shall be carried in each LSA, allowing for fine  
      granularity changes in topology."

      However, use the term "advertised" rather than "carried". After all, these are
      Link State Advertisements. 

   2. The same comment for all the Sub-TLVs. Here is another example from 
        RFC 3630:

      "The Link Type and Link ID sub-TLVs are mandatory, i.e., must appear
       exactly once.  All other sub-TLVs defined here may occur at most
       once.  These restrictions need not apply to future sub-TLVs.
       Unrecognized sub-TLVs are ignored."

       The new Sub-TLVs you are defining need this level of specification. 

   3. I know I told you not to use the term "multi-instance LSA". I still don't like
       the usage of "LSA instance" in the draft. In the base OSPF specification, RFC 2328, 
       the term LSA instance is used to denote a particular version of the same LSA - NOT
       an opaque identifier for multiple LSAs of the same type. Refer to section 12.1 in 
       RFC 2328. 

      The OSPF Opaque LSA RFC (RFC 2370 and its successor RFC 5250) correctly 
       identify the last 24 bits of the LSA ID as the Opaque ID. While RFC 3630 refers
       to this field as the "Instance", I believe this term should be avoided given the 
       semantics in the OSPF base specification. Hence, I'd suggest the 
       following changes:

225,226c225,226
<    the rest and make use of multiple TE LSA instances per source, per
<    [RFC3630] multiple instance capability.
---
>    the rest and be advertised with multiple TE LSAs per OSPF router, as
>    described in [RFC3630] and [RFC5250].
342,344c342,344
<    the dynamic information sub-TLVs into separate LSAs within an Optical
<    Node Property TLV using multiple TE LSA instances per source, per the
<    reference [RFC3630] multiple instance capability.
---
>    the dynamic information sub-TLVs from the static information sub-TLVs
>    and advertise them in OSPF TE LSAs, each with the Optical Node
>    Property TLV at the top level ([RFC3630 and RFC5250]). 
392c392
<    into smaller sub-TLVs that can be sent in separate LSA instances.
---
>    into smaller sub-TLVs that can be sent in separate OSPF TE LSAs.
399c399
<    sub-TLVs that can be sent in multiple LSA instances. The
---
>    sub-TLVs that can be sent in multiple OSPF TE LSAs. The
473c473
<    into multiple LSA instances each containing a disjoint assembly of
---
>    into multiple OSPF TE LSAs each containing a disjoint assembly of

     Additionally, I'd add RFC 5250 as at least a informative reference.

   4. Finally, I'd suggest changing the title from "OSPF Enhancement..." to 
       "GMPLS OSPF Enhancement..." since you are not really enhancing base 
       OSPF itself.  Of course, there are other CCAMP RFCs that do not make 
       this distinction. 

Thanks,
Acee 

  
On Sep 9, 2011, at 3:51 PM, Leeyoung wrote:

> Hi,
> 
> This update added a new section to discuss OSPF scalability and how to use multiple TE LSA instance
technique to keep the LSA under the MTU limit. Please note that the MTU limit is 1500 bytes and the examples
given in the encoding draft is far below this limit. In case the LSA size goes above the MTU, this draft
discusses how to split the Sub-TLVs' defined under the Optical Node Property TLV under the MTU limit to
avoid fragmentation. 
> 
> Take a look at Section 3 and if you have questions, please feel free to discuss in the mailing list. 
> 
> Regards,
> Young
> 
> 
> 
> -----Original Message-----
> From: ccamp-bounces <at> ietf.org [mailto:ccamp-bounces <at> ietf.org] On Behalf Of internet-drafts <at> ietf.org
> Sent: Thursday, September 08, 2011 5:16 PM
> To: i-d-announce <at> ietf.org
> Cc: ccamp <at> ietf.org
> Subject: [CCAMP] I-D Action: draft-ietf-ccamp-wson-signal-compatibility-ospf-05.txt
> 
> A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work
item of the Common Control and Measurement Plane Working Group of the IETF.
> 
> 	Title           : OSPF Enhancement for Signal and Network Element Compatibility for Wavelength Switched Optical Networks
> 	Author(s)       : Young Lee
>                          Greg M. Bernstein
> 	Filename        : draft-ietf-ccamp-wson-signal-compatibility-ospf-05.txt
> 	Pages           : 14
> 	Date            : 2011-09-08
> 
>   This document provides GMPLS OSPF routing enhancements to support
>   signal compatibility constraints associated with WSON network
>   elements. These routing enhancements are required in common optical
>   or hybrid electro-optical networks where not all of the optical
>   signals in the network are compatible with all network elements
>   participating in the network.
> 
>   This compatibility constraint model is applicable to common optical
>   or hybrid electro optical systems such as OEO switches, regenerators,
>   and wavelength converters since such systems can be limited to
>   processing only certain types of WSON signals.
> 
> 
> 
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-ietf-ccamp-wson-signal-compatibility-ospf-05.txt
> 
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
> 
> This Internet-Draft can be retrieved at:
> ftp://ftp.ietf.org/internet-drafts/draft-ietf-ccamp-wson-signal-compatibility-ospf-05.txt
> _______________________________________________
> CCAMP mailing list
> CCAMP <at> ietf.org
> https://www.ietf.org/mailman/listinfo/ccamp
> _______________________________________________
> CCAMP mailing list
> CCAMP <at> ietf.org
> https://www.ietf.org/mailman/listinfo/ccamp

Attachment (smime.p7s): application/pkcs7-signature, 5277 bytes
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Zhangfatai | 13 Sep 05:37 2011

Re: FW: I-D Action: draft-ietf-ccamp-wson-signal-compatibility-ospf-05.txt

Hi Acee,

I personally agree with your comments on "multi-instance LSA".

I will take your suggestions into account when I update "draft-ietf-ccamp-gmpls-general-constraints-ospf-te-05.txt".




Thanks
 
Fatai


-----Original Message-----
From: ccamp-bounces <at> ietf.org [mailto:ccamp-bounces <at> ietf.org] On Behalf Of Acee Lindem
Sent: 2011年9月13日 6:58
To: Greg Bernstein; Leeyoung
Cc: CCAMP
Subject: Re: [CCAMP] FW: I-D Action: draft-ietf-ccamp-wson-signal-compatibility-ospf-05.txt

Hi Young, Greg,
I have the following comments:

   1. Specify that the Optical Node Property TLV cardinality and order rules per LSA. 
       For example (from RFC 3630): 

     "The Link TLV describes a single link.  It is constructed of a set of
       sub-TLVs.  There are no ordering requirements for the sub-TLVs.

      Only one Link TLV shall be carried in each LSA, allowing for fine  
      granularity changes in topology."

      However, use the term "advertised" rather than "carried". After all, these are
      Link State Advertisements. 

   2. The same comment for all the Sub-TLVs. Here is another example from 
        RFC 3630:

      "The Link Type and Link ID sub-TLVs are mandatory, i.e., must appear
       exactly once.  All other sub-TLVs defined here may occur at most
       once.  These restrictions need not apply to future sub-TLVs.
       Unrecognized sub-TLVs are ignored."

       The new Sub-TLVs you are defining need this level of specification. 

   3. I know I told you not to use the term "multi-instance LSA". I still don't like
       the usage of "LSA instance" in the draft. In the base OSPF specification, RFC 2328, 
       the term LSA instance is used to denote a particular version of the same LSA - NOT
       an opaque identifier for multiple LSAs of the same type. Refer to section 12.1 in 
       RFC 2328. 

      The OSPF Opaque LSA RFC (RFC 2370 and its successor RFC 5250) correctly 
       identify the last 24 bits of the LSA ID as the Opaque ID. While RFC 3630 refers
       to this field as the "Instance", I believe this term should be avoided given the 
       semantics in the OSPF base specification. Hence, I'd suggest the 
       following changes:

225,226c225,226
<    the rest and make use of multiple TE LSA instances per source, per
<    [RFC3630] multiple instance capability.
---
>    the rest and be advertised with multiple TE LSAs per OSPF router, as
>    described in [RFC3630] and [RFC5250].
342,344c342,344
<    the dynamic information sub-TLVs into separate LSAs within an Optical
<    Node Property TLV using multiple TE LSA instances per source, per the
<    reference [RFC3630] multiple instance capability.
---
>    the dynamic information sub-TLVs from the static information sub-TLVs
>    and advertise them in OSPF TE LSAs, each with the Optical Node
>    Property TLV at the top level ([RFC3630 and RFC5250]). 
392c392
<    into smaller sub-TLVs that can be sent in separate LSA instances.
---
>    into smaller sub-TLVs that can be sent in separate OSPF TE LSAs.
399c399
<    sub-TLVs that can be sent in multiple LSA instances. The
---
>    sub-TLVs that can be sent in multiple OSPF TE LSAs. The
473c473
<    into multiple LSA instances each containing a disjoint assembly of
---
>    into multiple OSPF TE LSAs each containing a disjoint assembly of

     Additionally, I'd add RFC 5250 as at least a informative reference.
    
    

   4. Finally, I'd suggest changing the title from "OSPF Enhancement..." to 
       "GMPLS OSPF Enhancement..." since you are not really enhancing base 
       OSPF itself.  Of course, there are other CCAMP RFCs that do not make 
       this distinction. 


Thanks,
Acee 


  
On Sep 9, 2011, at 3:51 PM, Leeyoung wrote:

> Hi,
> 
> This update added a new section to discuss OSPF scalability and how to use multiple TE LSA instance
technique to keep the LSA under the MTU limit. Please note that the MTU limit is 1500 bytes and the examples
given in the encoding draft is far below this limit. In case the LSA size goes above the MTU, this draft
discusses how to split the Sub-TLVs' defined under the Optical Node Property TLV under the MTU limit to
avoid fragmentation. 
> 
> Take a look at Section 3 and if you have questions, please feel free to discuss in the mailing list. 
> 
> Regards,
> Young
> 
> 
> 
> -----Original Message-----
> From: ccamp-bounces <at> ietf.org [mailto:ccamp-bounces <at> ietf.org] On Behalf 
> Of internet-drafts <at> ietf.org
> Sent: Thursday, September 08, 2011 5:16 PM
> To: i-d-announce <at> ietf.org
> Cc: ccamp <at> ietf.org
> Subject: [CCAMP] I-D Action: 
> draft-ietf-ccamp-wson-signal-compatibility-ospf-05.txt
> 
> A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work
item of the Common Control and Measurement Plane Working Group of the IETF.
> 
> 	Title           : OSPF Enhancement for Signal and Network Element Compatibility for Wavelength Switched Optical Networks
> 	Author(s)       : Young Lee
>                          Greg M. Bernstein
> 	Filename        : draft-ietf-ccamp-wson-signal-compatibility-ospf-05.txt
> 	Pages           : 14
> 	Date            : 2011-09-08
> 
>   This document provides GMPLS OSPF routing enhancements to support
>   signal compatibility constraints associated with WSON network
>   elements. These routing enhancements are required in common optical
>   or hybrid electro-optical networks where not all of the optical
>   signals in the network are compatible with all network elements
>   participating in the network.
> 
>   This compatibility constraint model is applicable to common optical
>   or hybrid electro optical systems such as OEO switches, regenerators,
>   and wavelength converters since such systems can be limited to
>   processing only certain types of WSON signals.
> 
> 
> 
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-ietf-ccamp-wson-signal-compa

> tibility-ospf-05.txt
> 
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
> 
> This Internet-Draft can be retrieved at:
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> ibility-ospf-05.txt _______________________________________________
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